java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:04:07,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:04:07,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:04:07,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:04:07,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:04:07,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:04:07,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:04:07,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:04:07,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:04:07,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:04:07,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:04:07,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:04:07,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:04:07,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:04:07,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:04:07,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:04:07,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:04:07,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:04:07,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:04:07,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:04:07,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:04:07,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:04:07,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:04:07,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:04:07,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 18:04:07,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 18:04:07,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 18:04:07,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 18:04:07,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 18:04:07,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 18:04:07,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:04:07,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:04:07,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:04:07,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:04:07,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:04:07,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:04:07,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:04:07,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:04:07,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:04:07,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:04:07,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:04:07,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:04:07,324 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:04:07,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:04:07,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:04:07,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:04:07,326 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:04:07,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:04:07,327 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:04:07,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:04:07,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:04:07,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:04:07,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:04:07,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:04:07,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:04:07,329 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:04:07,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:04:07,330 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:04:07,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:04:07,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:04:07,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:04:07,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:04:07,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:04:07,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:07,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:04:07,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:04:07,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:04:07,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:04:07,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:04:07,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:04:07,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:04:07,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:04:07,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:04:07,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:04:07,634 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:04:07,634 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:04:07,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33.c [2019-10-13 18:04:07,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b588857e/8cf4c18cf7bc404fb365f4510a3d81c6/FLAG330f580cd [2019-10-13 18:04:08,385 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:04:08,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label33.c [2019-10-13 18:04:08,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b588857e/8cf4c18cf7bc404fb365f4510a3d81c6/FLAG330f580cd [2019-10-13 18:04:08,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b588857e/8cf4c18cf7bc404fb365f4510a3d81c6 [2019-10-13 18:04:08,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:04:08,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:04:08,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:08,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:04:08,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:04:08,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:08" (1/1) ... [2019-10-13 18:04:08,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549d6b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:08, skipping insertion in model container [2019-10-13 18:04:08,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:08" (1/1) ... [2019-10-13 18:04:08,569 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:04:08,659 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:04:09,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:09,640 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:04:10,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:10,064 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:04:10,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10 WrapperNode [2019-10-13 18:04:10,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:10,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:04:10,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:04:10,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:04:10,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... [2019-10-13 18:04:10,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... [2019-10-13 18:04:10,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... [2019-10-13 18:04:10,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... [2019-10-13 18:04:10,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... [2019-10-13 18:04:10,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... [2019-10-13 18:04:10,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... [2019-10-13 18:04:10,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:04:10,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:04:10,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:04:10,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:04:10,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:04:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:04:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:04:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:04:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:04:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:04:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:04:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:04:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:04:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:04:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:04:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:04:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:04:14,464 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:04:14,464 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:04:14,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:14 BoogieIcfgContainer [2019-10-13 18:04:14,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:04:14,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:04:14,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:04:14,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:04:14,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:08" (1/3) ... [2019-10-13 18:04:14,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feb27e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:14, skipping insertion in model container [2019-10-13 18:04:14,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:10" (2/3) ... [2019-10-13 18:04:14,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3feb27e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:14, skipping insertion in model container [2019-10-13 18:04:14,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:14" (3/3) ... [2019-10-13 18:04:14,494 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label33.c [2019-10-13 18:04:14,511 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:04:14,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:04:14,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:04:14,576 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:04:14,577 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:04:14,578 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:04:14,578 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:04:14,578 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:04:14,578 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:04:14,578 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:04:14,579 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:04:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-10-13 18:04:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 18:04:14,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:14,625 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:14,627 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:14,635 INFO L82 PathProgramCache]: Analyzing trace with hash 726540760, now seen corresponding path program 1 times [2019-10-13 18:04:14,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:14,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578413000] [2019-10-13 18:04:14,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:14,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:14,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:14,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578413000] [2019-10-13 18:04:14,979 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:14,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:04:14,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090990458] [2019-10-13 18:04:14,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:14,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:14,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:14,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:04:15,001 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2019-10-13 18:04:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:23,194 INFO L93 Difference]: Finished difference Result 1568 states and 2863 transitions. [2019-10-13 18:04:23,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:04:23,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2019-10-13 18:04:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:23,225 INFO L225 Difference]: With dead ends: 1568 [2019-10-13 18:04:23,226 INFO L226 Difference]: Without dead ends: 1048 [2019-10-13 18:04:23,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:04:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2019-10-13 18:04:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1025. [2019-10-13 18:04:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2019-10-13 18:04:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1590 transitions. [2019-10-13 18:04:23,383 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1590 transitions. Word has length 28 [2019-10-13 18:04:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:23,386 INFO L462 AbstractCegarLoop]: Abstraction has 1025 states and 1590 transitions. [2019-10-13 18:04:23,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:04:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1590 transitions. [2019-10-13 18:04:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 18:04:23,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:23,399 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:23,400 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:23,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1804858835, now seen corresponding path program 1 times [2019-10-13 18:04:23,401 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:23,402 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826018880] [2019-10-13 18:04:23,402 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:23,402 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:23,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:23,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826018880] [2019-10-13 18:04:23,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:23,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 18:04:23,874 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635196310] [2019-10-13 18:04:23,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 18:04:23,876 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 18:04:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 18:04:23,877 INFO L87 Difference]: Start difference. First operand 1025 states and 1590 transitions. Second operand 8 states. [2019-10-13 18:04:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:29,624 INFO L93 Difference]: Finished difference Result 3048 states and 4814 transitions. [2019-10-13 18:04:29,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:04:29,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2019-10-13 18:04:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:29,648 INFO L225 Difference]: With dead ends: 3048 [2019-10-13 18:04:29,648 INFO L226 Difference]: Without dead ends: 2029 [2019-10-13 18:04:29,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:04:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2019-10-13 18:04:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1671. [2019-10-13 18:04:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2019-10-13 18:04:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2347 transitions. [2019-10-13 18:04:29,738 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2347 transitions. Word has length 100 [2019-10-13 18:04:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:29,739 INFO L462 AbstractCegarLoop]: Abstraction has 1671 states and 2347 transitions. [2019-10-13 18:04:29,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 18:04:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2347 transitions. [2019-10-13 18:04:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 18:04:29,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:29,751 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:29,751 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash 278762691, now seen corresponding path program 1 times [2019-10-13 18:04:29,753 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:29,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039603506] [2019-10-13 18:04:29,753 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:29,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:29,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:30,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039603506] [2019-10-13 18:04:30,017 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035152469] [2019-10-13 18:04:30,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:30,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 18:04:30,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:30,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 18:04:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:30,344 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:04:30,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-10-13 18:04:30,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953910606] [2019-10-13 18:04:30,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:30,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:30,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:30,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 18:04:30,346 INFO L87 Difference]: Start difference. First operand 1671 states and 2347 transitions. Second operand 5 states. [2019-10-13 18:04:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:34,708 INFO L93 Difference]: Finished difference Result 3683 states and 5100 transitions. [2019-10-13 18:04:34,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:04:34,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-10-13 18:04:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:34,728 INFO L225 Difference]: With dead ends: 3683 [2019-10-13 18:04:34,728 INFO L226 Difference]: Without dead ends: 2018 [2019-10-13 18:04:34,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:04:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2019-10-13 18:04:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1985. [2019-10-13 18:04:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1985 states. [2019-10-13 18:04:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2671 transitions. [2019-10-13 18:04:34,804 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2671 transitions. Word has length 108 [2019-10-13 18:04:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:34,807 INFO L462 AbstractCegarLoop]: Abstraction has 1985 states and 2671 transitions. [2019-10-13 18:04:34,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:04:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2671 transitions. [2019-10-13 18:04:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 18:04:34,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:34,812 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:35,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:35,024 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:35,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1676050277, now seen corresponding path program 1 times [2019-10-13 18:04:35,025 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:35,025 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751758545] [2019-10-13 18:04:35,026 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:35,026 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:35,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:04:35,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751758545] [2019-10-13 18:04:35,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772503131] [2019-10-13 18:04:35,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:35,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-13 18:04:35,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:36,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-13 18:04:36,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-13 18:04:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 96 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:36,286 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:04:36,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 23 [2019-10-13 18:04:36,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502279967] [2019-10-13 18:04:36,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 18:04:36,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:36,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 18:04:36,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2019-10-13 18:04:36,294 INFO L87 Difference]: Start difference. First operand 1985 states and 2671 transitions. Second operand 23 states. [2019-10-13 18:04:38,619 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2019-10-13 18:04:42,005 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47